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    Reproductive efficiency and breeding potential of East African highland (Musa AAAEA) bananas

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    Date
    2006
    Author
    Ssebuliba, R.
    Talengera, D.
    Makumbi, Dan
    Namanya, P.
    Tenkouano, A.
    Tushemereirwe, W.K.
    Pillay, M.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    The East African highland banana (Musa spp. AAA) is an economically important food crop. The crop is affected by a number of diseases and pests. Genetic improvement of the crop is hindered by very low seed set and poor seed germination. The objective of this study was to compare seed set, seed quality and embryo rescue rates of hybrid seeds obtained from 20 East African highland banana cultivars crossed with a fertile diploid species, Musa acuminata spp. burmannicoides ‘Calcutta 4’, as a male parent. There was great variation in seed set, seed quality and in vitro embryo germination rates among the cultivars. Although 72% (range = 47–88%) of the seeds appeared normal externally characterized by black hard integuments, only 59% (range = 35–81%) contained embryos, of which 9% (range = 0–22%) germinated. This study demonstrated that hard-seededness alone does not signify the presence of an embryo and should not be regarded as a measure of seed fertility in East African highland bananas. Cultivars ‘Entukura’, ‘Enzirabahima’ and ‘Kabucuragye’ of the ‘Nfuuka’ clone set were superior in terms of seed set, presence of seeds with embryos and culturability of embryos. These cultivars are recommended as female parents for a crossing program in the improvement of East African highland bananas. The low embryo rescue rates suggest that hybrid seeds derived from East African highland banana possess factors that cause high embryo abortion. This may be ascribed to endosperm breakdown, which can release toxins.
    https://dx.doi.org/10.1016/j.fcr.2005.03.004
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3023
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.fcr.2005.03.004
    IITA Subjects
    Banana; Agribusiness; Disease Control; Farm Management; Food Security; Genetic Improvement; Handling, Transport, Storage And Protection Of Agricultural Products; Livelihoods; Plant Breeding; Plant Diseases; Plant Genetic Resources; Plant Production
    Agrovoc Terms
    Breeding; Embryo Culture; Fertility; Musa; Seed Set; Highland Banana; Cultivars
    Regions
    Africa; East Africa; Central Africa
    Countries
    Uganda; Cameroon
    Collections
    • Journal and Journal Articles4835
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